EN 12164 Grade CuZn40Mn1Pb1 R500 – High-Performance Unhardenable Copper Alloy for Bearings
CuZn40Mn1Pb1 (CW720R former identification: CuZn40MnPb) is an unhardenable copper alloy. High hardness and strength parameter are achievable by cold forming only. Manganes increases corrosion resistance and sliding qualities. Improved machinability by Pb-addition. Processing properties: warm forming: good cold forming: unfavorable machinability: good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application for roller bearing cages and screw machine products.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.3 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 100 - 125 GPa | Typical for Wrought Copper Brass |
Elongation | 20.0 °C | 12 % | |
Elongation A10 | 20.0 °C | 7 % | |
Elongation A100 | 20.0 °C | 5 % | |
Elongation A11.3 | 20.0 °C | 10 % | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 500 - 600 MPa | |
Yield strength Rp0.2 | 20.0 °C | 370 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 200.0 °C | 1.9E-5 1/K | |
Melting point | 875 - 1075 °C | Typical for Wrought Copper Brass | |
Specific heat capacity | 23.0 °C | 371 - 418 J/(kg·K) | Typical for Wrought Copper Brass |
Thermal conductivity | 23.0 °C | 100 - 234 W/(m·K) | Typical for Wrought Copper Brass |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.6 % |
Copper | 57 - 59 % |
Iron | 0.5 % |
Lead | 1 - 2 % |
Manganese | 0.4 - 1.8 % |
Nickel | 1 % |
Silicon | 0.4 % |
Tin | 0.5 % |
Metal
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